Scoble posted
an interview with Microsoft ClearType team on Channel 9.
Well worth a look even though the video is a bit long. You gotta love it when someone is so confident in their own work to say that Apple is outdated – years of research and development behind in screen fonts and readability. I know a lot of people would have a bit of a problem with that. 
I’d love to meet these guys in person some day. As they say, there is a bit of a revolution going on. In the old days typographers designed type to look good on paper (most still do) but there’s an increasing demand for readability on screen and the two mediums have few things in common. A new approach is needed and that’s where they focused their attention with ClearType technology and the new family of “C” fonts.
related links:
Microsoft Font Blog
Sitepoint – Anatomy of Web Fonts
ClearType tuner
WebTypography.net – A Practical Guide to Web Typography
Mark Boulton – 5 simple steps
Linotype – Learn about type – Pleasures of Design
Type Tester